2113454261 has 2 divisors, whose sum is σ = 2113454262. Its totient is φ = 2113454260.

The previous prime is 2113454249. The next prime is 2113454267. The reversal of 2113454261 is 1624543112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1444456036 + 668998225 = 38006^2 + 25865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113454261 is a prime.

It is a super-2 number, since 2×2113454261² = 8933377826678112242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113454267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056727130 + 1056727131.

It is an arithmetic number, because the mean of its divisors is an integer number (1056727131).

Almost surely, 2^2113454261 is an apocalyptic number.

It is an amenable number.

2113454261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113454261 is an equidigital number, since it uses as much as digits as its factorization.

2113454261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 2113454261 is about 45972.3205962022. The cubic root of 2113454261 is about 1283.3081462570.

Adding to 2113454261 its reverse (1624543112), we get a palindrome (3737997373).

The spelling of 2113454261 in words is "two billion, one hundred thirteen million, four hundred fifty-four thousand, two hundred sixty-one".